.eslintrc.json

{
  "parser": "@typescript-eslint/parser",
  "plugins": ["@typescript-eslint"],
  "overrides": [
    {
      "files": ["*.ts", "*.tsx"], // Your TypeScript files extension

      // As mentioned in the comments, you should extend TypeScript plugins here,
      // instead of extending them outside the `overrides`.
      // If you don't want to extend any rules, you don't need an `extends` attribute.
      "extends": [
        "plugin:@typescript-eslint/recommended",
        "plugin:@typescript-eslint/recommended-requiring-type-checking"
      ],

      "parserOptions": {
        "project": ["./tsconfig.json"] // Specify it only for TypeScript files
      }
    }
  ],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "next/core-web-vitals"
  ],
  "rules": {
    "new-cap": "off",
    "import/no-default-export": "off"
  }
}